Speaker
Summary
The CMS experiment at the LHC is designed to study a wide range of high energy
physics phenomena. It employs a large all-silicon tracker within a 3.8 T magnetic
solenoid, which allows precise measurements of transverse momentum (pT) and
vertex position.
This tracking detector will be upgraded with the installation of the
High-Luminosity LHC, which will provide up to about 10^35 cm^2 /s to CMS,
or 200 collisions per 25 ns bunch crossing. Novel tracking modules that utilize
closely spaced silicon sensors have been developed to allow the readout of hits
compatible with high pT tracks (> 2-3 GeV) to off-detector trigger electronics.
This would allow the use of tracking information at the first-level trigger (L1)
of CMS, a requirement to keep the L1 triggering rate below the 750 kHz target,
while maintaining physics sensitivity.
This talk presents a concept for an all FPGA-based track finder using a fully
time-multiplexed architecture. Various hardware concepts and technologies
currently under investigation for use at the CMS Phase 2 tracker off-detector
processing system will be presented, including the evaluation of multi-gigabit
link performance and slow-control/board-management solutions.
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